summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2010-05-18Merge branch 'core-debugobjects-for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-debugobjects-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: Section mismatch cleanup
2010-05-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds27-1245/+1228
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (23 commits) cifs: fix noserverino handling when unix extensions are enabled cifs: don't update uniqueid in cifs_fattr_to_inode cifs: always revalidate hardlinked inodes when using noserverino [CIFS] drop quota operation stubs cifs: propagate cifs_new_fileinfo() error back to the caller cifs: add comments explaining cifs_new_fileinfo behavior cifs: remove unused parameter from cifs_posix_open_inode_helper() [CIFS] Remove unused cifs_oplock_cachep cifs: have decode_negTokenInit set flags in server struct cifs: break negotiate protocol calls out of cifs_setup_session cifs: eliminate "first_time" parm to CIFS_SessSetup [CIFS] Fix lease break for writes cifs: save the dialect chosen by server cifs: change && to || cifs: rename "extended_security" to "global_secflags" cifs: move tcon find/create into separate function cifs: move SMB session creation code into separate function cifs: track local_nls in volume info [CIFS] Allow null nd (as nfs server uses) on create [CIFS] Fix losing locks during fork() ...
2010-05-18cifs: fix noserverino handling when unix extensions are enabledJeff Layton3-0/+15
The uniqueid field sent by the server when unix extensions are enabled is currently used sometimes when it shouldn't be. The readdir codepath is correct, but most others are not. Fix it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-05-18cifs: don't update uniqueid in cifs_fattr_to_inodeJeff Layton1-1/+0
We use this value to find an inode within the hash bucket, so we can't change this without re-hashing the inode. For now, treat this value as immutable. Eventually, we should probably use an inode number change on a path based operation to indicate that the lookup cache is invalid, but that's a bit more code to deal with. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-05-18cifs: always revalidate hardlinked inodes when using noserverinoJeff Layton1-0/+5
The old cifs_revalidate logic always revalidated hardlinked inodes. This hack allowed CIFS to pass some connectathon tests when server inode numbers aren't used (basic test7, in particular). Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-05-18Merge branch 'for-linus' of ↵Linus Torvalds31-285/+405
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: amiga - Floppy platform device conversion m68k: amiga - Sound platform device conversion m68k: amiga - Frame buffer platform device conversion m68k: amiga - Zorro host bridge platform device conversion m68k: amiga - Zorro bus modalias support platform: Make platform resource input parameters const m68k: invoke oom-killer from page fault serial167: Kill unused variables m68k: Implement generic_find_next_{zero_,}le_bit() m68k: hp300 - Checkpatch cleanup m68k: Remove trailing spaces in messages m68k: Simplify param.h by using <asm-generic/param.h> m68k: Remove BKL from rtc implementations
2010-05-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfsLinus Torvalds10-53/+104
* git://git.kernel.org/pub/scm/linux/kernel/git/joern/logfs: logfs: handle powerfail on NAND flash logfs: handle errors from get_mtd_device() logfs: remove unused variable logfs: fix sync logfs: fix compile failure logfs: initialize li->li_refcount logfs: commit reservations under space pressure logfs: survive logfs_buf_recover read errors logfs: Close i_ino reuse race logfs: fix logfs_seek_hole() logfs: Return -EINVAL if filesystem image doesn't match LogFS: Fix typo in b6349ac8 logfs: testing the wrong variable
2010-05-18Merge branch 'bkl/core' of ↵Linus Torvalds1-11/+0
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing * 'bkl/core' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing: ptrace: Cleanup useless header ptrace: kill BKL in ptrace syscall
2010-05-17m68k: amiga - Floppy platform device conversionGeert Uytterhoeven2-26/+26
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: amiga - Sound platform device conversionGeert Uytterhoeven2-20/+36
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: amiga - Frame buffer platform device conversionGeert Uytterhoeven2-18/+46
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: amiga - Zorro host bridge platform device conversionGeert Uytterhoeven5-128/+190
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: amiga - Zorro bus modalias supportGeert Uytterhoeven12-12/+66
Add Amiga Zorro bus modalias and uevent support Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17platform: Make platform resource input parameters constGeert Uytterhoeven2-4/+6
Make the platform resource input parameters of platform_device_add_resources() and platform_device_register_simple() const, as the resources are copied and never modified. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-17m68k: invoke oom-killer from page faultNick Piggin1-10/+4
As explained in commit 1c0fe6e3bd, we want to call the architecture independent oom killer when getting an unexplained OOM from handle_mm_fault, rather than simply killing current. Cc: linux-m68k@lists.linux-m68k.org Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: linux-arch@vger.kernel.org Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: David Rientjes <rientjes@google.com> [Geert] Kill 2 introduced compiler warnings Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17serial167: Kill unused variablesGeert Uytterhoeven1-2/+0
commits 638157bc1461f6718eeca06bedd9a09cf1f35c36 ("serial167: prepare to push BKL down into drivers") and 4165fe4ef7305609a96c7f248cefb9c414d0ede5 ("tty: Fix up char drivers request_room usage") removed code without removing the corresponding variables: | drivers/char/serial167.c: In function 'cd2401_rx_interrupt': | drivers/char/serial167.c:630: warning: unused variable 'len' | drivers/char/serial167.c: In function 'cy_ioctl': | drivers/char/serial167.c:1531: warning: unused variable 'val' Remove the variables to kill the warnings. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: Implement generic_find_next_{zero_,}le_bit()Geert Uytterhoeven1-6/+8
linux-next: fs/udf/balloc.c: In function 'udf_bitmap_new_block': fs/udf/balloc.c:274: error: implicit declaration of function 'generic_find_next_le_bit' Convert ext2_find_next_{zero_,}bit() into generic_find_next_{zero_,}le_bit(), and wrap the ext2_find_next_{zero_,}bit() around the latter. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: hp300 - Checkpatch cleanupAndrea Gelmini1-3/+1
arch/m68k/hp300/time.h:2: WARNING: space prohibited between function name and open parenthesis '(' Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: Remove trailing spaces in messagesFrans Pop3-7/+7
Signed-off-by: Frans Pop <elendil@planet.nl> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: Simplify param.h by using <asm-generic/param.h>Robert P. J. Day1-15/+1
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17m68k: Remove BKL from rtc implementationsThomas Gleixner2-34/+14
m68k does not support SMP. The access to the rtc is already serialized with local_irq_save/restore which is sufficient on UP. The open() protection in arch/m68k/mvme16x/rtc.c is not pretty but sufficient on UP and safe w/o the BKL. open() in arch/m68k/bvme6000/rtc.c can do with the same atomic logic as arch/m68k/mvme16x/rtc.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2010-05-17atomic_t: Remove volatile from atomic_t definitionAnton Blanchard1-2/+2
When looking at a performance problem on PowerPC, I noticed some awful code generation: c00000000051fc98: 3b 60 00 01 li r27,1 ... c00000000051fca0: 3b 80 00 00 li r28,0 ... c00000000051fcdc: 93 61 00 70 stw r27,112(r1) c00000000051fce0: 93 81 00 74 stw r28,116(r1) c00000000051fce4: 81 21 00 70 lwz r9,112(r1) c00000000051fce8: 80 01 00 74 lwz r0,116(r1) c00000000051fcec: 7d 29 07 b4 extsw r9,r9 c00000000051fcf0: 7c 00 07 b4 extsw r0,r0 c00000000051fcf4: 7c 20 04 ac lwsync c00000000051fcf8: 7d 60 f8 28 lwarx r11,0,r31 c00000000051fcfc: 7c 0b 48 00 cmpw r11,r9 c00000000051fd00: 40 c2 00 10 bne- c00000000051fd10 c00000000051fd04: 7c 00 f9 2d stwcx. r0,0,r31 c00000000051fd08: 40 c2 ff f0 bne+ c00000000051fcf8 c00000000051fd0c: 4c 00 01 2c isync We create two constants, write them out to the stack, read them straight back in and sign extend them. What a mess. It turns out this bad code is a result of us defining atomic_t as a volatile int. We removed the volatile attribute from the powerpc atomic_t definition years ago, but commit ea435467500612636f8f4fb639ff6e76b2496e4b (atomic_t: unify all arch definitions) added it back in. To dig up an old quote from Linus: > The fact is, volatile on data structures is a bug. It's a wart in the C > language. It shouldn't be used. > > Volatile accesses in *code* can be ok, and if we have "atomic_read()" > expand to a "*(volatile int *)&(x)->value", then I'd be ok with that. > > But marking data structures volatile just makes the compiler screw up > totally, and makes code for initialization sequences etc much worse. And screw up it does :) With the volatile removed, we see much more reasonable code generation: c00000000051f5b8: 3b 60 00 01 li r27,1 ... c00000000051f5c0: 3b 80 00 00 li r28,0 ... c00000000051fc7c: 7c 20 04 ac lwsync c00000000051fc80: 7c 00 f8 28 lwarx r0,0,r31 c00000000051fc84: 7c 00 d8 00 cmpw r0,r27 c00000000051fc88: 40 c2 00 10 bne- c00000000051fc98 c00000000051fc8c: 7f 80 f9 2d stwcx. r28,0,r31 c00000000051fc90: 40 c2 ff f0 bne+ c00000000051fc80 c00000000051fc94: 4c 00 01 2c isync Six instructions less. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-17atomic_t: Cast to volatile when accessing atomic variablesAnton Blanchard20-25/+25
In preparation for removing volatile from the atomic_t definition, this patch adds a volatile cast to all the atomic read functions. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-17Linus 2.6.34v2.6.34Linus Torvalds1-1/+1
2010-05-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds5-81/+160
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: rtnetlink: make SR-IOV VF interface symmetric sctp: delete active ICMP proto unreachable timer when free transport tcp: fix MD5 (RFC2385) support
2010-05-16Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds4-7/+21
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Oprofile: Fix Loongson irq handler MIPS: N32: Use compat version for sys_ppoll. MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1
2010-05-16rtnetlink: make SR-IOV VF interface symmetricChris Wright2-53/+129
Now we have a set of nested attributes: IFLA_VFINFO_LIST (NESTED) IFLA_VF_INFO (NESTED) IFLA_VF_MAC IFLA_VF_VLAN IFLA_VF_TX_RATE This allows a single set to operate on multiple attributes if desired. Among other things, it means a dump can be replayed to set state. The current interface has yet to be released, so this seems like something to consider for 2.6.34. Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-16sctp: delete active ICMP proto unreachable timer when free transportWei Yongjun1-0/+4
transport may be free before ICMP proto unreachable timer expire, so we should delete active ICMP proto unreachable timer when transport is going away. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-16tcp: fix MD5 (RFC2385) supportEric Dumazet2-28/+27
TCP MD5 support uses percpu data for temporary storage. It currently disables preemption so that same storage cannot be reclaimed by another thread on same cpu. We also have to make sure a softirq handler wont try to use also same context. Various bug reports demonstrated corruptions. Fix is to disable preemption and BH. Reported-by: Bhaskar Dutta <bhaskie@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-16 MIPS: Oprofile: Fix Loongson irq handlerWu Zhangjin1-1/+1
The interrupt enable bit for the performance counters is in the Control Register $24, not in the counter register. loongson2_perfcount_handler(), we need to use Reported-by: Xu Hengyang <hengyang@mail.ustc.edu.cn> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1198/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2010-05-16 MIPS: N32: Use compat version for sys_ppoll.Chandrakala Chavva1-1/+1
The sys_ppoll() takes struct 'struct timespec'. This is different for the N32 and N64 ABIs. Use the compat version to do the proper conversions. Signed-off-by: David Daney <ddaney@caviumnetworks.com> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1210/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2010-05-16 MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1Shane McDonald2-5/+19
In the FPU emulator code of the MIPS, the Cause bits of the FCSR register are not currently writeable by the ctc1 instruction. In odd corner cases, this can cause problems. For example, a case existed where a divide-by-zero exception was generated by the FPU, and the signal handler attempted to restore the FPU registers to their state before the exception occurred. In this particular setup, writing the old value to the FCSR register would cause another divide-by-zero exception to occur immediately. The solution is to change the ctc1 instruction emulator code to allow the Cause bits of the FCSR register to be writeable. This is the behaviour of the hardware that the code is emulating. This problem was found by Shane McDonald, but the credit for the fix goes to Kevin Kissell. In Kevin's words: I submit that the bug is indeed in that ctc_op: case of the emulator. The Cause bits (17:12) are supposed to be writable by that instruction, but the CTC1 emulation won't let them be updated by the instruction. I think that actually if you just completely removed lines 387-388 [...] things would work a good deal better. At least, it would be a more accurate emulation of the architecturally defined FPU. If I wanted to be really, really pedantic (which I sometimes do), I'd also protect the reserved bits that aren't necessarily writable. Signed-off-by: Shane McDonald <mcdonald.shane@gmail.com> To: anemo@mba.ocn.ne.jp To: kevink@paralogos.com To: sshtylyov@mvista.com Patchwork: http://patchwork.linux-mips.org/patch/1205/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> ---
2010-05-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds1-0/+5
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: check for read permission on src file in the clone ioctl
2010-05-15lib/btree: fix possible NULL pointer dereferencekirjanov@gmail.com1-1/+2
mempool_alloc() can return null in atomic case. Signed-off-by: Denis Kirjanov <kirjanov@gmail.com> Cc: Joern Engel <joern@logfs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-15mmc: at91_mci: modify cache flush routinesNicolas Ferre1-1/+1
As we were using an internal dma flushing routine, this patch changes to the DMA API flush_kernel_dcache_page(). Driver is able to compile now. [akpm@linux-foundation.org: flush_kernel_dcache_page() comes before kunmap_atomic()] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-15Btrfs: check for read permission on src file in the clone ioctlDan Rosenberg1-0/+5
The existing code would have allowed you to clone a file that was only open for writing Signed-off-by: Chris Mason <chris.mason@oracle.com>
2010-05-15Merge branch 'for-linus' of ↵Linus Torvalds8-26/+49
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: JFS: Free sbi memory in error path fs/sysv: dereferencing ERR_PTR() Fix double-free in logfs Fix the regression created by "set S_DEAD on unlink()..." commit
2010-05-15Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf record: Add a fallback to the reference relocation symbol
2010-05-15JFS: Free sbi memory in error pathJan Blunck1-7/+6
I spotted the missing kfree() while removing the BKL. [akpm@linux-foundation.org: avoid multiple returns so it doesn't happen again] Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-15fs/sysv: dereferencing ERR_PTR()Dan Carpenter1-1/+1
I moved the dir_put_page() inside the if condition so we don't dereference "page", if it's an ERR_PTR(). Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-15Fix double-free in logfsAl Viro1-7/+7
iput() is needed *until* we'd done successful d_alloc_root() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-15Fix the regression created by "set S_DEAD on unlink()..." commitAl Viro5-11/+35
1) i_flags simply doesn't work for mount/unlink race prevention; we may have many links to file and rm on one of those obviously shouldn't prevent bind on top of another later on. To fix it right way we need to mark _dentry_ as unsuitable for mounting upon; new flag (DCACHE_CANT_MOUNT) is protected by d_flags and i_mutex on the inode in question. Set it (with dont_mount(dentry)) in unlink/rmdir/etc., check (with cant_mount(dentry)) in places in namespace.c that used to check for S_DEAD. Setting S_DEAD is still needed in places where we used to set it (for directories getting killed), since we rely on it for readdir/rmdir race prevention. 2) rename()/mount() protection has another bogosity - we unhash the target before we'd checked that it's not a mountpoint. Fixed. 3) ancient bogosity in pivot_root() - we locked i_mutex on the right directory, but checked S_DEAD on the different (and wrong) one. Noticed and fixed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-15Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds12-35/+99
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: 6126/1: ARM mpcore_wdt: fix build failure and other fixes ARM: 6125/1: ARM TWD: move TWD registers to common header ARM: 6110/1: Fix Thumb-2 kernel builds when UACCESS_WITH_MEMCPY is enabled ARM: 6112/1: Use the Inner Shareable I-cache and BTB ops on ARMv7 SMP ARM: 6111/1: Implement read/write for ownership in the ARMv6 DMA cache ops ARM: 6106/1: Implement copy_to_user_page() for noMMU ARM: 6105/1: Fix the __arm_ioremap_caller() definition in nommu.c
2010-05-15Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, mrst: Don't blindly access extended config space
2010-05-15profile: fix stats and data leakageHugh Dickins1-1/+3
If the kernel is large or the profiling step small, /proc/profile leaks data and readprofile shows silly stats, until readprofile -r has reset the buffer: clear the prof_buffer when it is vmalloc()ed. Signed-off-by: Hugh Dickins <hughd@google.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-15hughd: update email addressHugh Dickins1-1/+1
My old address will shut down in a couple of weeks: update the tree. Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-15x86, mrst: Don't blindly access extended config spaceH. Peter Anvin1-0/+4
Do not blindly access extended configuration space unless we actively know we're on a Moorestown platform. The fixed-size BAR capability lives in the extended configuration space, and thus is not applicable if the configuration space isn't appropriately sized. This fixes booting certain VMware configurations with CONFIG_MRST=y. Moorestown will add a fake PCI-X 266 capability to advertise the presence of extended configuration space. Reported-and-tested-by: Petr Vandrovec <petr@vandrovec.name> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Acked-by: Jacob Pan <jacob.jun.pan@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> LKML-Reference: <AANLkTiltKUa3TrKR1M51eGw8FLNoQJSLT0k0_K5X3-OJ@mail.gmail.com>
2010-05-14Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds4-6/+18
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cacheinfo: Turn off L3 cache index disable feature in virtualized environments x86, k8: Fix build error when K8_NB is disabled x86, amd: Check X86_FEATURE_OSVW bit before accessing OSVW MSRs x86: Fix fake apicid to node mapping for numa emulation
2010-05-14x86, cacheinfo: Turn off L3 cache index disable feature in virtualized ↵Frank Arnold1-0/+4
environments When running a quest kernel on xen we get: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 IP: [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df PGD 0 Oops: 0000 [#1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 0, comm: swapper Tainted: G W 2.6.34-rc3 #1 /HVM domU RIP: 0010:[<ffffffff8142f2fb>] [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x 2ca/0x3df RSP: 0018:ffff880002203e08 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000060 RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000 RBP: ffff880002203ed8 R08: 00000000000017c0 R09: ffff880002203e38 R10: ffff8800023d5d40 R11: ffffffff81a01e28 R12: ffff880187e6f5c0 R13: ffff880002203e34 R14: ffff880002203e58 R15: ffff880002203e68 FS: 0000000000000000(0000) GS:ffff880002200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000038 CR3: 0000000001a3c000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 0, threadinfo ffffffff81a00000, task ffffffff81a44020) Stack: ffffffff810d7ecb ffff880002203e20 ffffffff81059140 ffff880002203e30 <0> ffffffff810d7ec9 0000000002203e40 000000000050d140 ffff880002203e70 <0> 0000000002008140 0000000000000086 ffff880040020140 ffffffff81068b8b Call Trace: <IRQ> [<ffffffff810d7ecb>] ? sync_supers_timer_fn+0x0/0x1c [<ffffffff81059140>] ? mod_timer+0x23/0x25 [<ffffffff810d7ec9>] ? arm_supers_timer+0x34/0x36 [<ffffffff81068b8b>] ? hrtimer_get_next_event+0xa7/0xc3 [<ffffffff81058e85>] ? get_next_timer_interrupt+0x19a/0x20d [<ffffffff8142fa23>] get_cpu_leaves+0x5c/0x232 [<ffffffff8106a7b1>] ? sched_clock_local+0x1c/0x82 [<ffffffff8106a9a0>] ? sched_clock_tick+0x75/0x7a [<ffffffff8107748c>] generic_smp_call_function_single_interrupt+0xae/0xd0 [<ffffffff8101f6ef>] smp_call_function_single_interrupt+0x18/0x27 [<ffffffff8100a773>] call_function_single_interrupt+0x13/0x20 <EOI> [<ffffffff8143c468>] ? notifier_call_chain+0x14/0x63 [<ffffffff810295c6>] ? native_safe_halt+0xc/0xd [<ffffffff810114eb>] ? default_idle+0x36/0x53 [<ffffffff81008c22>] cpu_idle+0xaa/0xe4 [<ffffffff81423a9a>] rest_init+0x7e/0x80 [<ffffffff81b10dd2>] start_kernel+0x40e/0x419 [<ffffffff81b102c8>] x86_64_start_reservations+0xb3/0xb7 [<ffffffff81b103c4>] x86_64_start_kernel+0xf8/0x107 Code: 14 d5 40 ff ae 81 8b 14 02 31 c0 3b 15 47 1c 8b 00 7d 0e 48 8b 05 36 1c 8b 00 48 63 d2 48 8b 04 d0 c7 85 5c ff ff ff 00 00 00 00 <8b> 70 38 48 8d 8d 5c ff ff ff 48 8b 78 10 ba c4 01 00 00 e8 eb RIP [<ffffffff8142f2fb>] cpuid4_cache_lookup_regs+0x2ca/0x3df RSP <ffff880002203e08> CR2: 0000000000000038 ---[ end trace a7919e7f17c0a726 ]--- The L3 cache index disable feature of AMD CPUs has to be disabled if the kernel is running as guest on top of a hypervisor because northbridge devices are not available to the guest. Currently, this fixes a boot crash on top of Xen. In the future this will become an issue on KVM as well. Check if northbridge devices are present and do not enable the feature if there are none. [ hpa: backported to 2.6.34 ] Signed-off-by: Frank Arnold <frank.arnold@amd.com> LKML-Reference: <1271945222-5283-3-git-send-email-bp@amd64.org> Acked-by: Borislav Petkov <borislav.petkov@amd.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
2010-05-14x86, k8: Fix build error when K8_NB is disabledBorislav Petkov1-0/+5
K8_NB depends on PCI and when the last is disabled (allnoconfig) we fail at the final linking stage due to missing exported num_k8_northbridges. Add a header stub for that. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> LKML-Reference: <20100503183036.GJ26107@aftab> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-01 06:07:46 +0300